**Core Concept**
Prostaglandin analogs are a class of medications used to reduce intraocular pressure (IOP) in patients with glaucoma. They work by increasing the outflow of aqueous humor from the eye, thereby decreasing IOP.

**Why the Correct Answer is Right**
The correct answer is a prostaglandin analog that acts on the uveoscleral pathway to increase the outflow of aqueous humor. This class of medications is particularly effective in glaucoma patients who have failed other types of IOP-lowering medications. The prostaglandin analog increases the permeability of the uveoscleral tissue, allowing more aqueous humor to drain out of the eye.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is a different class of medication used to treat glaucoma, not a prostaglandin analog.
**Option B:** This option is incorrect because it is a medication used to treat conditions other than glaucoma, such as migraine headaches.
**Option C:** This option is incorrect because it is a prostaglandin analog, but it is not the correct one used in glaucoma.

**Clinical Pearl / High-Yield Fact**
Prostaglandin analogs are a key part of the treatment plan for glaucoma patients, and they can be used in combination with other medications to achieve optimal IOP control. It's essential to remember that prostaglandin analogs can cause changes in iris pigmentation, so patients should be monitored for this potential side effect.

**Correct Answer:** C. Latanoprost